c131a97ac4
- W5500 SPI Ethernet controller for wired connectivity - Silvertel Ag9905MT PoE PD module (48V to 5V) - RJ45 connector with integrated magnetics - Higher camera resolution (1024x768 vs 800x600) using wired bandwidth - WiFi fallback if Ethernet disconnected - Separate BOM, pin mapping, ESPHome config - 3D-printable enclosure (50x40mm, larger for RJ45)
60 lines
2.6 KiB
Markdown
60 lines
2.6 KiB
Markdown
# ESP32-S3 Pin Mapping - PoE Presence Sensor
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## GPIO Assignments
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| GPIO | Function | Peripheral | Direction | Notes |
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|------|----------|-----------|-----------|-------|
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| GPIO0 | BOOT button | - | Input | Pull-up, hold low for bootloader |
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| GPIO1 | Camera D0 | OV5640 DVP | Input | Camera data bus |
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| GPIO2 | Camera D1 | OV5640 DVP | Input | Camera data bus |
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| GPIO3 | I2C SDA | SHT41 + BH1750 | Bidir | 4.7K pull-up |
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| GPIO4 | I2C SCL | SHT41 + BH1750 | Bidir | 4.7K pull-up |
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| GPIO5 | Camera D2 | OV5640 DVP | Input | Camera data bus |
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| GPIO6 | Camera D3 | OV5640 DVP | Input | Camera data bus |
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| GPIO7 | Camera D4 | OV5640 DVP | Input | Camera data bus |
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| GPIO8 | Camera D5 | OV5640 DVP | Input | Camera data bus |
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| GPIO9 | Camera D6 | OV5640 DVP | Input | Camera data bus |
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| GPIO10 | Camera D7 | OV5640 DVP | Input | Camera data bus |
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| GPIO11 | Camera XCLK | OV5640 | Output | 20MHz LEDC |
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| GPIO12 | Camera PCLK | OV5640 | Input | Pixel clock |
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| GPIO13 | Camera VSYNC | OV5640 | Input | Vertical sync |
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| GPIO14 | Camera HREF | OV5640 | Input | Horizontal ref |
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| GPIO15 | Camera SIOD | OV5640 SCCB | Bidir | Camera I2C data |
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| GPIO16 | Camera SIOC | OV5640 SCCB | Output | Camera I2C clock |
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| GPIO17 | mmWave UART TX | LD2410C RX | Output | 256000 baud |
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| GPIO18 | mmWave UART RX | LD2410C TX | Input | 256000 baud |
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| GPIO19 | Free | - | - | (was USB D-) |
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| GPIO20 | Free | - | - | (was USB D+) |
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| GPIO21 | Camera PWDN | OV5640 | Output | Power down |
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| GPIO33 | W5500 SPI MISO | Ethernet | Input | SPI data in |
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| GPIO34 | W5500 SPI MOSI | Ethernet | Output | SPI data out |
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| GPIO35 | W5500 SPI SCK | Ethernet | Output | SPI clock (25MHz max) |
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| GPIO36 | W5500 SPI CS | Ethernet | Output | SPI chip select |
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| GPIO37 | W5500 INT | Ethernet | Input | Interrupt (active low) |
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| GPIO38 | PIR output | AM312 | Input | Motion detect |
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| GPIO39 | mmWave OUT | LD2410C | Input | Presence output |
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| GPIO40 | Status LED | Blue LED | Output | Via 1K resistor |
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| GPIO41 | Camera RESET | OV5640 | Output | Active low |
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| GPIO42 | W5500 RST | Ethernet | Output | Active low |
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## SPI Bus (GPIO33-36) - W5500 Ethernet
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| Signal | GPIO | W5500 Pin |
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|--------|------|-----------|
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| MISO | GPIO33 | SO |
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| MOSI | GPIO34 | SI |
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| SCK | GPIO35 | SCLK |
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| CS | GPIO36 | SCSn |
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| INT | GPIO37 | INTn |
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| RST | GPIO42 | RSTn |
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## I2C Bus (GPIO3/GPIO4) - Sensors
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| Device | Address | Function |
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|--------|---------|----------|
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| SHT41 | 0x44 | Temperature + Humidity |
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| BH1750 | 0x23 | Ambient Light |
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## UART1 (GPIO17/GPIO18) - Radar
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| Device | Baud | Function |
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|--------|------|----------|
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| LD2410C | 256000 | mmWave presence |
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